A life for a life

Devin is an otaku who wishes to be in the anime world with all his might, but knows it will never happen. Until one day a girl appears and shows him how to go to this world but at a cost. He takes the chance and winds up in the world of Highschool DxD, while there he meets Issei and decides to take on his dream, but do this with ALL OF THE ANIME WORLDS.
Disclaimer I do not own any of these respected anime